Shock-absorber.



J. L MOCGNNBLL. SHOCK ABSOHBER.

APPLICATION FILED SEPT. 30, 1912.

1,084,353., Fateued Jan. 13, 1914.

Sllumlfoz @50i/tuen@ o Zit JOHN 3R, IVICCONNELL, OF EMMETT, IDAHO.

SHOCK-ABSORBER.

Specication of Letters Patent.

Patented Jan. 13,1914.

Application filed September 30, 1912. Serial No. 723,148.

To all whom it may concern:

Be it known that l, J oHN R. MoCoNNnLL, a citizen of the United States, residing at Emmett, in the county of Canyon and State of Idaho, have invented certain new and useful Improvements in Shock-Absorbers, of which the following is a specification, reference being had to the accompanying drawin s.

rlhis invention relates to new and useful improvements iii-shock absorbers and more particularly to a pneumatic device for counteracting the action of a vehicle spring to allow a gradual recoil thereof, and the primary object of the invention is to provide a simple device of this character which will positively carry out the object lfor which the same is designed.

A further object of the invention resides in providing a cylinder adapted to be mounted on the upper section oi a spring or upon a portion et the trame, and a piston having connection with the axle ot' a vehicle whereby upon movement ot the axle, the piston will be operated within the cylinder.

Still another object of the invention resides in providing a device which is cxtremoly simple and durable in construction,

inexpensive to manufacture and one which will be very ellicient and useful in operation.

lWith these and other objects in view, the invention consists in the novell features oi construction, combination and arrangement ot parts as will be hereinafter referred to and more particularly pointrd out in the specilication and claims.

ln the accompanying drawing tornung a part ot this application, Figure 1 is a side elevation partly in section showing my improved, device applied to use. Fig. l is a trout elevation thereof, and Fig. 3 is an enlarged vertical section through the cylinder.

ln describing my invention, l shall refer to the drawing in which similar reference characters designate corresponding parts tlufoughout the several views and in which 'l indicates the axle of a vehicle of any delsired type, preferably a motor vehicle upon whieh 'is mounted in the usual manner, the Ylull elliptic spring Q and mounted on the end ot the axle, in the usual n'ianner, is the wheel 3.

My invention contemplates the provision of a device to absorb the shock incident to the traveling of vehicles over rough roads and also to provide a means wherebthe recoil of the spring will be gradua and to this end, a cross bar 4 is secured through the medium of the bolts 5, to the upper section of the sprino 2. Mounted on. the cross im i, is a Cylinder e, the bottom of which 1s formed of' a substantial drum or the like 7, the lower wall thereof being engaged with the bolts 5, whereby the complete cylinder is secured to the cross bar. The wall of tlie cylinder 6 is provided, adjacent its lower end with a plurality of apertures 8 which entend throughout the periphery thereof, while the side wall of the drum 7 is also provided with similar openings 9, which register with the aforesaid openings 8 and the top wall of said drum or the like 7, has' an upwardly opening valve l() seated therein. The stern or shank of this valve which extends downwardly into the drum is encircled by a coil spring 11 which contacts with a nut 12 on the end of this shank and also contacts with the under face of thetop wall ot said drum, whereby said valve is normally held in its closed position.

Slidably mounted in the cylinder 6, is a piston head 13, the rod 14e of which extends through the upper wall of the cylinder and connectswvith the horizontal portion of an inverted til-shaped member 15. The arms of this member 15 extend downwardly along the sides of the cylinder 6 and are loosely disposed through openings 16 in the bar 4, the extreme tree ends of said arms being engaged with clamping bands 17 on the axle 1. From this construction, it will be seen that during the travel of a vehicle having my improved device applied thereto, should the wheels strike an obstruction or the like, the axle 1 will, of course, be caused to rise upwardly compressing the spring 2 and simultaneously causing the piston 13 to rise in the cylinder 6. As the. piston 13 is drawn upwardly, the valve l0 in the cylinder will be opened and air drawn within the cylinder from the drum 7 and upon the recoil ot the spring 2, the piston will be drawn downwardly to compress the air within the cylinder but, of course, this com.` pression ot the air will not permit the spring to return with a sudden jar, but cause the same to return gradually and thereby not atleet. the occupants of the vehicle to any appreciable extent.

lVhile I have shown full elliptic springs in the drawings and have furthermore shown the transverse bar ll, as being mounted on the upper sections of these springs, itA Will be understood that semi-elliptic or threequarter elliptic springs may be used and the bar 4 mounted directly on the frame ol the vehicle.

From the foregoing it Will be seen that I have provid -.d a simple, inexpensive and etlieient means for carrying out. the objects of the invention and while I have particularly described the elements best adapted to perform the functions set forth, it is obvious that various Changes in form, proportion andin the minor details of construe tion may be resorted to without departing from the spirit or sacrificing any ot the principles 'of the, invention.

Having thus described this invention, what I elaim isz-- 1. In :1 vehicle attachment, the Combination With a. yielding member, and an objecty Support-ing the. same; of a cylinder mounted 0n said yielding member, the bottom of said cylinder being drum-like in desi gn, the side Walls of said cylinder and the side Walls ot said drum beingr provided with registering apertures, and the top Wall of said drum be- -ing provided with a valve seat, a valve mounted in said seat and designed to open upwardly therefrom, spring means to norweisses mally retain said. valve in its closed position, a piston disposed in said cylinder, and ineens carried by the aforesaid object for supporting said piston in position.

.the form or" drum, the wells of seid drum and the walls of said cylinder being provided wiiih registering apertures, an upwardly opening valve mounted in the top wall ot the drum,- means to normally retain said valve in its closed position, a piston reeiproeally mounted in said cylinder, the rod thereof extending through the upper Wall of the Cylinder, an inverted U-sliaped member connected at its horizontal portion to the piston rod, the arms of said U-member being loosely disposed through said bar on opposite sides of said cylinder, and means to 1secure the free ends of said arms to the ax e.

In testimony 'whereof I hereunto arix my signature in the presence of two Witnesses.

' JOHN R. MCCONNELL. Witnesses Grenen B. HALEY, H. D. PARK. 

